package com.atguigu.gulimall.order.service.impl;

import com.atguigu.gulimall.order.entity.OrderEntity;
import com.atguigu.gulimall.order.entity.OrderReturnReasonEntity;
import com.rabbitmq.client.Channel;
import org.springframework.amqp.core.Message;
import org.springframework.amqp.core.MessageProperties;
import org.springframework.amqp.rabbit.annotation.RabbitHandler;
import org.springframework.amqp.rabbit.annotation.RabbitListener;
import org.springframework.stereotype.Service;

import java.io.IOException;
import java.util.Map;
import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.atguigu.common.utils.PageUtils;
import com.atguigu.common.utils.Query;

import com.atguigu.gulimall.order.dao.OrderItemDao;
import com.atguigu.gulimall.order.entity.OrderItemEntity;
import com.atguigu.gulimall.order.service.OrderItemService;


@Service("orderItemService")
@RabbitListener(queues = {"hello-java-Queue"})
public class OrderItemServiceImpl extends ServiceImpl<OrderItemDao, OrderItemEntity> implements OrderItemService {

    @Override
    public PageUtils queryPage(Map<String, Object> params) {
        IPage<OrderItemEntity> page = this.page(
                new Query<OrderItemEntity>().getPage(params),
                new QueryWrapper<OrderItemEntity>()
        );

        return new PageUtils(page);
    }

    /**
     * queues   声明需要监听的所有队列
     * class: org.springframework.amqp.core.Message
     * 参数可以写以下类型:
     * 1.Message message    原生消息详细信息,头_体
     * 2.T<发送消息的类型>     OrderReturnReasonEntity entity
     * 3.Channel    当前传输数据的通道
     *
     * Queue(队列)    可以有很多人都来监听,只要收到消息,队列就会删除消息,而且只能有一个收到此消息
     *  场景:
     *      1).订单服务启动多个 同一个消息,只能有一个客户端收到
     *      2).只有一个消息完全处理完,方法运行结束,我们才可以接受到下一个消息
     *
     */
//    @RabbitListener(queues = {"hello-java-Queue"})
    @RabbitHandler
    public void recieveMessage(Message message, OrderReturnReasonEntity entity, Channel channel) throws InterruptedException {
        System.out.println("接收到消息..."+entity);
        //Body:'{"id":1,"name":"呵呵","sort":null,"status":null,"createTime":1597042061867}'
        byte[] body = message.getBody();
        //消息头属性信息
        MessageProperties messageProperties = message.getMessageProperties();
        //Thread.sleep(3000);
        System.out.println("消息处理完成=->"+entity.getName());

        //手动确认签收信息  以下必须有
        //Channel(通道)内按顺序自增的
        long deliveryTag = message.getMessageProperties().getDeliveryTag();
        System.out.println("deliveryTag==>"+deliveryTag);
        //签收消息/非批量模式  deliveryTag(处理数量) multiple(是否批量操作)
        try {
//            if(){}else{}      逻辑判断
            //处理消息
           /* channel.basicAck(deliveryTag,false);
            System.out.println("签收了货物..."+deliveryTag);*/

            //拒绝签收  requeue=false 丢弃    true   发挥服务器/服务器重新入队
            //Long deliveryTag(处理数量),boolean multiple(是否批量操作),boolean requeue(重新入队)
            //channel.basicNack(deliveryTag,false,true);
            //Long deliveryTag(处理数量),boolean requeue(重新入队)
            //channel.basicReject(deliveryTag,true);
        }catch (Exception e){
            //网络中断
            e.printStackTrace();
        }

    }

    @RabbitHandler
    public void recieveMessage1(OrderEntity entity) throws InterruptedException {
        System.out.println("接收到消息..."+entity);
    }
}